542434 has 4 divisors (see below), whose sum is σ = 813654. Its totient is φ = 271216.

The previous prime is 542401. The next prime is 542441. The reversal of 542434 is 434245.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 540225 + 2209 = 735^2 + 47^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 5 + 4 + 4⁵ + 2¹⁹ + 3⁶ + 4⁷ .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135607 + ... + 135610.

2⁵⁴²⁴³⁴ is an apocalyptic number.

542434 is a deficient number, since it is larger than the sum of its proper divisors (271220).

542434 is a wasteful number, since it uses less digits than its factorization.

542434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271219.

The product of its digits is 1920, while the sum is 22.

The square root of 542434 is about 736.5011880506. The cubic root of 542434 is about 81.5546949906.

Adding to 542434 its reverse (434245), we get a palindrome (976679).

The spelling of 542434 in words is "five hundred forty-two thousand, four hundred thirty-four".